Study the given pattern carefully and select the number that can replace the question mark (?) in it.
| 10 | 5 | 20 |
| 20 | 10 | 40 |
| 40 | 20 | ? |
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 80.
The logic used here is:
Column 1:
10 × 2 = 20
20 × 2 = 40
Column 2:
5 × 2 = 10
10 × 2 = 20
Column 3:
20 × 2 = 40
40 × 2 = 80